Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden
Some genetic consequences of forest regeneration methods are discussed based on results from an 11-year-old experiment with Scots pine in northern Sweden. The experiment comprises two environments (seed-trees and clear-felling), two regeneration methods (planting and sowing) and four seed sources (l...
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Oxford University Press
1994
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Online Access: | http://forestry.oxfordjournals.org/cgi/content/short/67/2/133 https://doi.org/10.1093/forestry/67.2.133 |
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fthighwire:oai:open-archive.highwire.org:foresj:67/2/133 2023-05-15T17:44:26+02:00 Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden ACKZELL, L. LINDGREN, D. 1994-01-01 00:00:00.0 text/html http://forestry.oxfordjournals.org/cgi/content/short/67/2/133 https://doi.org/10.1093/forestry/67.2.133 en eng Oxford University Press http://forestry.oxfordjournals.org/cgi/content/short/67/2/133 http://dx.doi.org/10.1093/forestry/67.2.133 Copyright (C) 1994, Institute of Chartered Foresters Articles TEXT 1994 fthighwire https://doi.org/10.1093/forestry/67.2.133 2013-05-27T17:14:27Z Some genetic consequences of forest regeneration methods are discussed based on results from an 11-year-old experiment with Scots pine in northern Sweden. The experiment comprises two environments (seed-trees and clear-felling), two regeneration methods (planting and sowing) and four seed sources (local seeds from the seed trees, northern stand seeds and two seed orchard crops). Seed source was important compared with environment and regeneration method for the occurrence of empty cultivation quadrats ( 2 × 2 m). In relative terms it was less important for growth. There was no indication that progenies of the local trees were best suited for the locality. There was no evident positive effect of the higher selection caused by higher mortality and release thinning in some entries compared with others. Hence, a higher selection after sowing than after planting could not be shown to have positive effects. The variance between half sib families was a small share of the total variance, and thus the number of parents is probably unimportant for variance of tree height or seedling survival in a forest. Progenies from the seed orchards grew fast, but the mortality was higher than for the stand progenies. There was no significant genotype × environment interaction. There was a significant genotype × method interaction; seed orchard progeny were better for sowing than for planting. Text Northern Sweden HighWire Press (Stanford University) Forestry 67 2 133 148 |
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Articles ACKZELL, L. LINDGREN, D. Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
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description |
Some genetic consequences of forest regeneration methods are discussed based on results from an 11-year-old experiment with Scots pine in northern Sweden. The experiment comprises two environments (seed-trees and clear-felling), two regeneration methods (planting and sowing) and four seed sources (local seeds from the seed trees, northern stand seeds and two seed orchard crops). Seed source was important compared with environment and regeneration method for the occurrence of empty cultivation quadrats ( 2 × 2 m). In relative terms it was less important for growth. There was no indication that progenies of the local trees were best suited for the locality. There was no evident positive effect of the higher selection caused by higher mortality and release thinning in some entries compared with others. Hence, a higher selection after sowing than after planting could not be shown to have positive effects. The variance between half sib families was a small share of the total variance, and thus the number of parents is probably unimportant for variance of tree height or seedling survival in a forest. Progenies from the seed orchards grew fast, but the mortality was higher than for the stand progenies. There was no significant genotype × environment interaction. There was a significant genotype × method interaction; seed orchard progeny were better for sowing than for planting. |
format |
Text |
author |
ACKZELL, L. LINDGREN, D. |
author_facet |
ACKZELL, L. LINDGREN, D. |
author_sort |
ACKZELL, L. |
title |
Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
title_short |
Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
title_full |
Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
title_fullStr |
Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
title_full_unstemmed |
Some Genetic Aspects of Human Intervention in Forest Regeneration: Considerations Based on Examples from an Experiment in Northern Sweden |
title_sort |
some genetic aspects of human intervention in forest regeneration: considerations based on examples from an experiment in northern sweden |
publisher |
Oxford University Press |
publishDate |
1994 |
url |
http://forestry.oxfordjournals.org/cgi/content/short/67/2/133 https://doi.org/10.1093/forestry/67.2.133 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://forestry.oxfordjournals.org/cgi/content/short/67/2/133 http://dx.doi.org/10.1093/forestry/67.2.133 |
op_rights |
Copyright (C) 1994, Institute of Chartered Foresters |
op_doi |
https://doi.org/10.1093/forestry/67.2.133 |
container_title |
Forestry |
container_volume |
67 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
148 |
_version_ |
1766146655240847360 |